[ARM] Use ARRAY_SIZE macro when appropriate

Use ARRAY_SIZE macro already defined in linux/kernel.h
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/ecard.c

@@ -1009,7 +1009,7 @@ ecard_probe(int slot, card_type_t type)
 		ec->fiqmask = 4;
 	}
 
-	for (i = 0; i < sizeof(blacklist) / sizeof(*blacklist); i++)
+	for (i = 0; i < ARRAY_SIZE(blacklist); i++)
 		if (blacklist[i].manufacturer == ec->cid.manufacturer &&
 		    blacklist[i].product == ec->cid.product) {
 			ec->card_desc = blacklist[i].type;